a(n) is the coefficient of y^n in Product_{k=0..n} (1 + (k+2)*y + y^2), for n >= 0.
A324962
a(n) is the coefficient of y^n in Product_{k=0..n} (1 + (k+2)*y + y^2), for n >= 0.
Terms
- a(0) =1a(1) =5a(2) =29a(3) =196a(4) =1519a(5) =13293a(6) =129681a(7) =1395504a(8) =16420458a(9) =209724450a(10) =2889435185a(11) =42711906510a(12) =674273776409
External references
- oeis: A324962